Tarasenko put the Blues in front 3-2 at 7:18 when he one-timed a pass from Buchnevich into a wide-open net. He extended it 4-2 at 12:45, poking the puck around Power before skating to the net and sliding the puck by Anderson's left pad.
"He's got a lot of tricks up his sleeve," Binnington said. "Haven't seen that one in a while and it was well executed."
Buchnevich made it 5-2 at 6:18 of the third period, getting his stick on a bouncing puck at the front of the net before it hit Tuch's skate and redirected into the net.
Tarasenko scored into an empty net at 17:32 for the 6-2 final.
NOTES: Thomas has six goals and 17 assists in an 11-game point streak. … Thomas has 53 assists. He reached the 50-assist mark in his 64th game. The last Blues player to reach the milestone in fewer games was Craig Janney, who did so in 53 games in 1993-94. … He is the fifth St. Louis player with five assists in a regular-season game, joining Dallas Drake (Oct. 29, 2003), Adam Oates (Jan. 26, 1991), Bernie Federko (Feb. 27, 1988) and Brian Sutter (Nov. 22, 1983). … Buchnevich has five goals and nine assists in an eight-game point streak. … Tuch has five points (two goals, three assists) in his past five games. … Tage Thompson had an assist, giving him 18 points (10 goals, eight assists) in his past 17 games.